JP2006104390A - Liquid detergent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid detergent which meets both detergencey and flexibility endowment for practical purposes, solves the problem of yellowing, reduces skin irritation, and achieves easy biodegradability and low aquatic life toxicity as well. <P>SOLUTION: The liquid detergent composition comprises a nonionic surface active agent (A) represented by chemical formula (1) (wherein R<SP>1</SP>is a hydrocarbon group having ≥80% content of an 8-10C hydrocarbon group; -(AO)- is a 3C and/or 4C oxyalkylene group; -(EO)- is a 2C oxyethylene group; and n and m are each an average addition molar number of an alkylene oxide, n is 0-5 and m is 1-50) which is derived from a saturated primary alcohol having ≥50% branching type content, an anionic surface active agent (B), and a cationic surface active agent (C) at a weight ratio of the solid content of each component of (A)/[(B)+(C)]=1/1 to 20/1 and (B)/(C)=2/1 to 1/2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a liquid detergent composition, and more particularly to a liquid detergent composition used for textile products.

  Liquid detergents are easy to formulate components with various functions due to the characteristics of liquids, and because there is a soft image for clothing, products with multiple secondary functions have been developed. Yes. In particular, since the washing action and the softening action on clothes are functions that are manifested by the contradictory actions, the development of liquid detergents that have been given a softening action has been conducted for some time.

  For example, JP-A 57-105496 discloses an acidic liquid detergent composition comprising a specific nonionic surfactant, an anionic surfactant, a cationic surfactant and an amine oxide. Is not satisfactory compared to weak alkaline heavy liquid detergents. Japanese Patent Laid-Open No. 62-48796 discloses a liquid detergent composition comprising an anionic surfactant, a cationic surfactant and a nonionic surfactant. It is not satisfactory. In addition, Japanese Patent Application Laid-Open No. 9-255598 and the like disclose liquid detergent compositions having a softening action, but all are intended for light detergents and do not have sufficient cleaning power. Absent. As described above, the liquid detergent composition containing the clothing softening base has a problem in the detergency and the dispersibility of the solid particle dirt. It is desired.

  On the other hand, liquid detergents comprising a nonionic surfactant and a quaternary ammonium salt having a fiber softening effect are disclosed in JP-A-53-43708, JP-A-54-39413, and JP-A-11-11. Although it is disclosed in Japanese Patent No. 310299, etc., when washed with a detergent containing a quaternary ammonium salt, it gives flexibility to fibers, especially cotton clothing, but the yellowing of the cloth is caused by adsorption of iron in the washing water. There was a problem that occurred.

In addition, in detergents for delicate textile materials such as wool, silk, acrylic sweaters and blouses, so-called light detergents, the product itself is neutral and gives flexibility at the same time as washing. JP-A-56-152898, JP-A-56-152899, JP-A-61-61 are compositions in which a nonionic surfactant as a main component and an anionic surfactant and a cationic surfactant are appropriately combined. -97396, JP-A-62-70498, and the like. However, no detergent has been obtained which exhibits a sufficient flexibility imparting effect from synthetic fibers such as acrylic to hydrophilic fibers such as cotton, and does not cause yellowing of fabrics.
JP-A-11-315299 Japanese Patent Laid-Open No. 9-255588

  The present invention has been made in view of the problems of the prior art as described above, and is a liquid detergent composition that can be satisfied in terms of imparting flexibility while exhibiting practically satisfactory detergency. An object of the present invention is to provide a liquid detergent composition that does not cause yellowing of cloth, has low skin irritation, and is easily biodegradable and has low aquatic biotoxicity.

  As a result of searching for various conditions necessary for realizing both detergency and flexibility that can be satisfied in practice, the present inventor has a specific chemical structure, preferably a specific critical micelle concentration (cmc). By using nonionic surfactants within the range of the above as essential components, it is possible to achieve both contradictory detergency and flexibility imparting effects, solve yellowing problems, reduce skin irritation, and easily The present inventors have found that a liquid detergent composition that is extremely useful in practical use and can achieve both degradability and low aquatic toxicity, and has completed the present invention.

That is, in the liquid detergent composition of the present invention, the content of the saturated alcohol having 8 to 10 carbon atoms is 80% (% by weight, the same applies hereinafter) and the content of the branched alcohol is 50% or more. A component (A) which is a nonionic surfactant represented by the following chemical formula (1) derived from a saturated primary alcohol, a component (B) which is an anionic surfactant, and a component which is a cationic surfactant ( C), and the solid content weight ratio of each of these components is (A) / [(B) + (C)] = 1/1 to 20/1, and (B) / (C) = 2. / 1 to 1/2 (Claim 1).

(R ¹ represents a hydrocarbon group having a C 8-10 hydrocarbon group content of 80% or more, — (AO) — represents an oxyalkylene group having 3 and / or 4 carbon atoms, — (EO)-represents an oxyethylene group having 2 carbon atoms, and n and m represent the average number of added moles of alkylene oxide, n is 0 to 5, and m is 1 to 50.)

In the above, the component (A) is preferably a nonionic surfactant represented by the following chemical formula (2) derived from a branched saturated primary alcohol of 2-alkyl-1-alkanol type (Claims). 2).

(R ² and R ³ represent a hydrocarbon group, the hydrocarbon group constituting R ² has 4 to 6 carbon atoms, the hydrocarbon group constituting R ³ has 2 to 4 carbon atoms, and R ² and The total number of carbon atoms of the hydrocarbon group of R ³ is 6 to 10.-(AO)-,-(EO)-, n, and m are the same as in chemical formula (1).

  Further, the critical micelle concentration (cmc) of the component (A) is in the range of 0.01 wt% or more and less than 1.0 wt%, and the critical micelle concentration (cmc) of the component (B) is 0.01 wt%. The critical micelle concentration (cmc) of the component (C) is preferably in the range of not less than 0.0001% by weight and less than 0.1% by weight (Claim 3).

  The liquid cleaning composition of the present invention has the following effects compared to the prior art.

  That is, it has both a level of cleanliness that is practically satisfactory for a wide range of fiber types and garments and a level of flexibility that is practically satisfactory. In addition, it suppresses the adsorption of iron in water to clothing and eliminates the yellowing problem caused by finishing or over time.

  Further, depending on handling conditions and blending conditions, it is possible to greatly reduce the blending amount of a viscosity reducing agent that expresses skin irritation and flammability problems, that is, solvents. And the high cost problem by a viscosity reducing agent mixing | blending can be eliminated.

  Further, when a liquid detergent composition is prepared with the components specified in the present invention, it becomes possible to make the product uniform and transparent, to prepare a wide range of formulations, to reduce the viscosity, and the like.

  Furthermore, a significant reduction in skin irritation, easy biodegradability and low aquatic toxicity are achieved.

  As described above, the liquid detergent composition of the present invention comprises a component (A) that is a nonionic surfactant having a specific composition, a component (B) that is an anionic surfactant, and a component that is a cationic surfactant ( C).

  Component (A) used as an essential component in the present invention is a nonionic surfactant having a specific composition, which is improved to the extent that skin irritation and environmental impact (aquatic toxicity) are not a problem, and is practically satisfactory. A level of detergency that can be achieved and a level of flexibility that can be satisfied in practice are ensured, and various problems in the prior art are solved.

In order to achieve the object of the present invention, the component (A), which is a nonionic surfactant, is saturated with a C8-10 content of 80% or more and a branched alcohol content of 50% or more. It shall have the composition of the following chemical formula (1) derived from primary alcohol.

In the chemical formula (1), R ¹ represents a hydrocarbon group having a content of 8 to 10 carbon atoms of 80% or more, — (AO) — represents an oxyalkylene group having 3 and / or 4 carbon atoms, — (EO)-represents an oxyethylene group having 2 carbon atoms. Moreover, n and m show the average addition mole number of each alkylene oxide, It is preferable that n is 0-5 and m is 1-50.

The component (A) is preferably a nonionic surfactant represented by the following chemical formula (2) derived from a branched saturated primary alcohol of 2-alkyl-1-alkanol type.

In the chemical formula (2), R ² and R ³ represent a hydrocarbon group, the hydrocarbon group constituting R ² has 4 to 6 carbon atoms, and the hydrocarbon group constituting R ³ has 2 to 4 carbon atoms. Yes, the total of the hydrocarbon groups of R ² and R ³ is preferably 6 to 10, and more preferably 6 to 8. -(AO)-,-(EO)-, n and m are the same as those in chemical formula (1).

  The component (A) that satisfies the above requirements is a characteristic derived from a branched alcohol, such as good wetness / penetration, easy solubility in water, compatibility with other components, solubilization, and a wide variety of stains. It is a component that exhibits good and broad detergency and is indispensable for achieving the object of the present invention.

  The component (A) is derived from a saturated primary alcohol having a C8-10 content of 80% or more and a branched alcohol content of 50% or more. It may be a single carbon or a mixture of higher alcohols having different carbon numbers, and the chemical structure of the higher alcohol may be a single composition or a mixture of isomers. Also good. Preferable examples include branched saturated primary alcohols produced by the oxo process via higher olefins derived from propylene or butene, or a mixture thereof, and isononanol, isodecanol and the like produced by this process. Is commercially available. Moreover, a mixture of branched saturated primary alcohols produced by this production method, for example, EXXAL9, EXXAL10 (manufactured by Exxon Chemical Co., Ltd.) and the like are also examples of branched higher alcohols that can be suitably used. Further, linear and branched mixed alcohols produced by an oxo method via an olefin derived from n-paraffin or ethylene oligomer can also be suitably used. Also, 2-alkyl-1-alkanols such as 2-propyl-1-hexanol, 2-butyl-1-hexanol, 2-ethyl-1-heptanol, 2-propyl-1-heptanol, 2-ethyl-1-octanol and the like A single composition of Guerbet Alcohol having a chemical structure of a type or a mixture thereof is an example of a branched type higher alcohol that can be suitably used. Moreover, it is also possible to mix | blend and use 2 or more types of said various alcohol.

  The nonionic surfactant used in the present invention is obtained by block addition of ethylene oxide and alkylene oxide having 3 and / or 4 carbon atoms to the saturated primary alcohol, and a specific molar ratio or the like is obtained during this addition polymerization. A condition is selected. The alkylene oxide having 3 carbon atoms is propylene oxide. The alkylene oxide having 4 carbon atoms also includes tetrahydrane, but is preferably 1,2-butylene oxide or 2,3-butylene oxide.

  N in the compounds represented by the general formulas (1) and (2), that is, the average added mole number of alkylene oxide having 3 and / or 4 carbon atoms is preferably 0 to 10, more preferably 0 to 5. is there. When this average added mole number (n) exceeds 10, practical performances such as surface tension lowering ability, wetting / penetrating ability, etc. may be deteriorated or properties may be deteriorated.

  M in the compounds represented by the general formulas (1) and (2), that is, the average number of added moles of ethylene oxide is 1 to 100, and is excellent in surface tension reducing ability, wetting / penetrating ability, and physical property balance. In this respect, 1 to 50 is preferable, and 1 to 20 is more preferable.

  The nonionic surfactant used in the present invention can be derived from the above-mentioned saturated primary alcohol using various known catalysts such as metal oxides, metal salts, metal complexes in addition to alkali catalysts and acid catalysts. It is. Among them, the alkali catalyst is advantageous in commercial production from the viewpoint of the reaction rate, production cost and the like because the amount of by-product produced is relatively low. Examples of the alkali catalyst that can be used include hydroxides of alkali metals such as potassium hydroxide and sodium hydroxide, and various amine compounds including triethylamine. A suitable amount of catalyst is in the range of 0.005 to 1.0% (converted to solid content) per reaction crude product (total charge), more preferably 0.03 to 0.4% (converted to solid content).

  Furthermore, the present inventor has found that the critical micelle concentration (cmc), which is a physicochemical characteristic value that is extremely important in characterizing the performance of a surfactant, is extremely rational in defining the effect of the present invention that is practically useful. The range of surfactants that can be suitably used in the present invention was specified by the critical micelle concentration (cmc) at 25 ° C.

  The critical micelle concentration (cmc) of the surfactant is an important characteristic value that determines the performance and actual use concentration of the surfactant. In the present invention, the critical micelle concentration (cmc) is a characteristic value obtained from surface tension data (bending point of surface tension-concentration curve) by the Wilhelmy method for a surfactant aqueous solution having an arbitrary concentration at 25 ° C. % By weight.

  Regarding the component (A), nonionic surfactants that can be suitably used are those having a critical micelle concentration (cmc) in the range of 0.01 wt% or more and less than 1.0 wt%. When the critical micelle concentration of the component (A) is less than 0.01% by weight, flexibility may be lowered and texture may be deteriorated. In addition, skin irritation and environmental impact (aquatic toxicity) may deteriorate. On the other hand, when the critical micelle concentration is 1.0% by weight or more, there may be a problem that a practically desired cleaning power is not exhibited and a texture is deteriorated.

  Next, specific examples of the component (B) that is an anionic surfactant used in the liquid detergent composition of the present invention include alkylbenzene sulfonates having an alkyl group having 8 to 16 carbon atoms, and those having 8 to 20 carbon atoms. Having an alkyl sulfate of 8-20 carbon atoms, an alkane sulfonate of 8-20 carbon atoms, a linear or branched alkyl or alkenyl group having 8-20 carbon atoms, and an average of 1 Alkyl ether sulfate or alkenyl ether sulfate to which 10 mol of ethylene oxide is added, polyoxyethylene alkylphenol ether sulfate having an alkyl group having 8 to 20 carbon atoms and having an average of 1 to 10 mol of ethylene oxide added, carbon number Examples include α-sulfo fatty acid ester salts having 8 to 20 alkyl groups. Among them, in addition to the linear alkylbenzene sulfonate, the above-mentioned sulfonic acid type and sulfuric acid ester type anionic surfactants in which the hydrophobic group is a linear and / or branched hydrocarbon group having 8 to 15 carbon atoms are preferable. In particular, it is desirable that the hydrophobic group is a branched hydrocarbon group having 8 to 15 carbon atoms.

  The critical micelle concentration (cmc) of the anionic surfactant as the component (B) is preferably in the range of 0.01 wt% or more and less than 1 wt%. When the critical micelle concentration of the component (B) is less than 0.01% by weight, flexibility may be lowered and texture may be deteriorated. On the other hand, when the critical micelle concentration is 1.0% by weight or more, there may be a problem that a practically desired cleaning power is not exhibited and a texture is deteriorated.

Next, as a suitable example of component (C) which is a cationic surfactant used for the liquid detergent composition of this invention, the thing represented by the following chemical formula (I-1) or (I-2) Long chain hydrocarbon group type quaternary ammonium salt, di long chain hydrocarbon group type quaternary ammonium salt, mono long chain hydrocarbon group type tertiary amine, and di long chain hydrocarbon group type tertiary amine. These compounds represented by the chemical formula (I-1) or (I-2) may be used alone or in a mixture of two or more.

In the chemical formulas (I-1) and (I-2), R ¹¹ has an alkyl group, alkenyl group, or β-hydroxyalkyl group having 8 to 24 carbon atoms, or an ester group, an amide group, or an ether group as a dividing group. And it is a C8-C27 hydrocarbon group also including these parting groups. R ¹² has an alkyl group, an alkenyl group, or a β-hydroxyalkyl group having 8 to 24 carbon atoms, or an ester group, an amide group, or an ether group as a splitting group, and has 8 to 27 carbon atoms including these splitting groups. It is a hydrocarbon group. R ¹² may alternatively be an alkyl group having 1 to 3 carbon atoms or a β-hydroxyalkyl group. R ¹³ is an alkyl group having 1 to 3 carbon atoms or a β-hydroxyalkyl group, and two R ¹³ in the chemical formula (I-1) may be the same or different. X < ^- > is a monoalkyl sulfate group having a halogen ion or an alkyl group having 1 to 3 carbon atoms. X ⁻ may be replaced by another anionic compound present in the system by an equilibrium action in the system. When an acid coexists in the system, the compound of the chemical formula (I-2) which is a tertiary amine may form a neutralized salt with the acid.

As a more specific example of the cationic surfactant, a compound represented by the following chemical formula (II) or (III) can be exemplified.

  The critical micelle concentration (cmc) of the cationic surfactant as the component (C) is preferably in the range of 0.0001% by weight or more and less than 0.1% by weight. When the critical micelle concentration of the component (C) is less than 0.0001% by weight, it becomes difficult to mix the component (C) into the cleaning composition, and the pliability of the garment that does not exhibit the practically desired flexibility is obtained. May cause problems such as yellowing. In addition, skin irritation and environmental impact (aquatic toxicity) tend to deteriorate. On the other hand, when the critical micelle concentration is 0.1% by weight or more, there may be a problem that the flexibility desired in practice is not exhibited and the texture is deteriorated.

  The above components are blended so that the solid content weight ratio is (A) / [(B) + (C)] = 1/1 to 20/1. When the blending amount of the component (A) is less than this, the practically desired detergency does not appear. In addition, the compatibility of the cleaning composition deteriorates. If it is more than this, the desired flexibility is not exhibited. A more preferable range of the blending amount is (A) / [(B) + (C)] = 2/1 to 10/1. Moreover, it is preferable that the ratio of a component (B) and a component (C) exists in the range of (B) / (C) = 2/1-1/2 by solid content weight ratio.

  The cleaning composition composed of the components (A), (B), and (C) that satisfy the above-described requirements has a problem that iron in the water, which has been a problem in the prior art, is adsorbed on clothes and causes yellowing. Also solve.

  In addition, the detergent composition composed of the components (A), (B), and (C) satisfying the above requirements is a viscosity reducing agent that develops skin irritation and flammability problems depending on handling conditions and blending conditions. That is, the blending amount of solvents can be greatly reduced. Moreover, the high cost problem by a viscosity reducing agent mixing | blending can be eliminated. Further, within the scope of the present invention, when the selection of the components (A), (B) and (C) and the blending conditions are further limited within a specific range, a liquid detergent composition having a uniform and transparent appearance. This greatly improves the commercial value of the product.

  In the detergent composition of the present invention, in addition to the above essential components, as long as the effects of the present invention are not impaired, higher fatty acids, known chelating agents, anti-staining agents such as polyethylene glycol, carboxymethyl cellulose, etc. Examples of viscosity reducing agents include lower alcohols such as ethanol and isopropanol, glycols such as ethylene glycol and propylene glycol, urea, benzene sulfonate, toluene sulfonate, xylene sulfonate, benzoate and the like, and milk. As a suspending agent, for example, polyvinyl acetate, vinyl acetate styrene polymer, polystyrene or the like can be blended. Further, fluorescent dyes, fragrances, pigments, enzymes and the like can be blended as necessary. Although the manufacturing method of this composition is not specifically limited, In order to adjust pH, sodium hydroxide, potassium hydroxide, alkanolamine, sulfuric acid, hydrochloric acid, etc. can be used. Moreover, a well-known thickener, antiseptic | preservative, etc. can also be mix | blended.

  Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

1. Synthesis of Nonionic Surfactant After charging a predetermined amount of alcohol and potassium hydroxide (0.10% per crude product) as starting materials shown in Table 1 in an 8 L autoclave, the inside of the autoclave was replaced with nitrogen, The pressure was reduced at 70 ° C. with stirring, and after the internal pressure in the reactor reached 2.7 KPa, dehydration under reduced pressure was continued for 30 minutes. Next, after the temperature was raised to 120 ° C., alkylene oxide (PO: propylene oxide, BO: butylene oxide) in an amount corresponding to the number of added moles shown in the same table was introduced at 125 ± 5 ° C. and a reaction pressure of 0.20 MPa. did. After the introduction, the reaction temperature was maintained, and aging was performed until the internal pressure decreased and became constant. Next, after introducing ethylene oxide in an amount corresponding to the number of moles of addition shown in the same table at 135 ± 5 ° C. and a reaction pressure of 0.25 MPa, the reaction temperature is maintained and aging is performed until the internal pressure decreases and becomes constant. I let you. The reaction solution was cooled to 70 ° C. and then neutralized with lactic acid to obtain a nonionic surfactant.

  Table 1 shows the composition, cloud point, critical micelle concentration (cmc), and environmental characteristic values of the nonionic surfactant obtained as described above.

  In addition, the cloud point showed the value by 1% aqueous solution of a nonionic surfactant.

  The critical micelle concentration (cmc) was obtained by measuring the surface tension of a nonionic surfactant aqueous solution having an arbitrary concentration at 25 ° C. by the Wilhelmy method, and obtained [surface tension (mN / m) −aqueous solution concentration (wt%). )] The value (unit: wt%) obtained from the curve was shown (surface tension method).

Moreover, the fish toxicity as an environmental characteristic value is the water temperature of 24 ± 1 ° C with reference to the section of the acute toxicity test for fish in Oryzias Latipes, JIS K 0102: 1998 “Factory drainage test method”. The results of evaluation with a _50- h LC ₅₀ value (half lethal concentration) in 10 fish tests are shown.
○… LC ₅₀ value ≧ 10mg / L
×… LC ₅₀ value <10 mg / L

In addition, the biodegradability as an environmental characteristic value is tested for 28 days at a water temperature of 22 ± 2 ° C. according to the OECD test guideline (easy biodegradability test) 301B. The results of evaluating the biodegradability by obtaining the rate (%) are shown.
○ Decomposition rate (28 days) ≧ 60%
×… Decomposition rate (28 days) <60%

2. Preparation and Evaluation of Liquid Detergent Composition Using the nonionic surfactant obtained above and other components shown in Table 2, a liquid detergent composition was prepared according to the formulation shown in Table 2, and the following procedure was performed. The cleaning test and evaluation were performed. The composition shown in Table 2 is parts by weight (in terms of solid content), and the total composition was 100 parts by weight.

(1) Cleaning test for cotton fibers (evaluation of softening effect and yellowing)
In a 10 liter small inverted washing machine, dissolve 10 grams of the detergent composition in 5 liters of 25 ° C. tap water containing 0.3 ppm of iron, and put a white cotton towel so that the bath ratio is 50 times. After washing for 10 minutes, it was dehydrated to a moisture content of 100%, and then rinsed twice with 5 liters of 25 ° C. tap water containing 0.3 ppm of iron, and then shaded and dried for 12 hours. This washing operation was repeated three times on the same cotton towel, and then left in a constant temperature and humidity chamber at 25 ° C. and 65% RH for 2 days, and this was used as a test cloth to evaluate flexibility and yellowing.

The control fabric, the ratio of _C 12 _{/ C 14} carbon chain lengths from _{C 12} and _{C 14} is 75/25, and Chokukusariritsu 100% 20% aqueous solution of a cleaning agent of the 7EO adduct of saturated primary alcohols The composition used was subjected to the above washing treatment three times.

[Flexibility evaluation]
A pair comparison was performed using the control cloth as a control, and sensory evaluation was performed according to the following criteria. The evaluation was made with a total score (0 to 15 points) obtained by adding the evaluation points of five female (married) panelists.
3 points: very soft than the control fabric 2 points: sufficiently softer than the control fabric 1 point: slightly softer than the control fabric 0 points: not soft (equivalent to the control fabric)

[Yellowness evaluation]
A paired comparison was made using the control fabric as a control, and visual evaluation was performed according to the following criteria. The evaluation was made with a total score (-10 to 0 points) obtained by adding the evaluation points of five female (married) panelists.
0 point: Whiteness equivalent to the control cloth -1 point: Slightly yellowish than the control cloth -2 points: Much yellowish than the control cloth

(2) Cleaning test for synthetic fibers (evaluation of softening effect and yellowing)
A cleaning test and evaluation were performed under the same conditions as the cotton fiber cleaning test except that an acrylic jersey cloth was used instead of the white cotton towel. In addition, an acrylic jersey cloth was used as a control cloth, and a cloth prepared under the same processing conditions as in the washing test for cotton fibers was used.

(3) Cleaning test for collar stains (detergency evaluation)
Cut the collar part of a cotton / polyester blended shirt worn for 3 days and create a collar stain test cloth. Was used for cleaning evaluation. This test was conducted from late June to late July 2004. In addition, this test was used for the test within 48 hours after collecting shirts worn for the purpose of adhering collar stains. The washing test was carried out under the same conditions as the washing test for cotton fibers (however, the washing operation was performed once) except that a charge cloth was used in addition to three pieces of collar stain test cloth instead of the white cotton towel. The charge cloth was prepared by cutting a non-wearing shirt identical to the shirt on which the collar stain was made and washing it under the same treatment conditions as in the cotton fiber washing test. The control cloth was obtained by cutting the collar from a shirt that had been tested and washed for the purpose of making a charge cloth.

[Cleanability evaluation]
A paired comparison was made using the control fabric as a control, and the evaluation was made by visual observation according to the following criteria. The evaluation was performed by a total score (0 to 15 points) obtained by adding the evaluation points of five female (married) panelists.
3 points: Collar stains are completely removed compared to the control fabric, and very cleanability 2 points: Collar stains are removed almost completely compared to the control fabric, and cleanability is excellent 1 point: Stain remains to the extent that the collar stain is slightly observed compared to the control fabric. 0 points: The collar stain is hardly removed compared to the control fabric.

The liquid detergent composition of the present invention is extremely useful for achieving both practically desired detergency and flexibility-imparting effects, without causing yellowing problems, and improving skin irritation and environmental compatibility. It is a cleaning composition, and can be used as a liquid cleaning agent in various fields for improving the texture after finishing and imparting flexibility, that is, in various fields such as commercial clothing cleaning, linen cleaning, and household clothing cleaning.

Claims (3)

A non-ion represented by the following chemical formula (1) derived from a saturated primary alcohol having a saturated alcohol content of 8 to 10 carbon atoms of 80% or more and a branched alcohol content of 50% or more. Component (A) which is a surfactant, Component (B) which is an anionic surfactant, and Component (C) which is a cationic surfactant,
The solid content weight ratio of each component is (A) / [(B) + (C)] = 1/1 to 20/1, and (B) / (C) = 2/1 to 1/2. A liquid detergent composition characterized by comprising:

(R ¹ represents a hydrocarbon group having a C 8-10 hydrocarbon group content of 80% or more, — (AO) — represents an oxyalkylene group having 3 and / or 4 carbon atoms, — (EO)-represents an oxyethylene group having 2 carbon atoms, and n and m represent the average number of added moles of alkylene oxide, n is 0 to 5, and m is 1 to 50.) The component (A) is a nonionic surfactant represented by the following chemical formula (2) derived from a branched saturated primary alcohol of 2-alkyl-1-alkanol type. 2. The liquid detergent composition according to 1.

(R ² and R ³ represent a hydrocarbon group, the hydrocarbon group constituting R ² has 4 to 6 carbon atoms, the hydrocarbon group constituting R ³ has 2 to 4 carbon atoms, and R ² and The total number of carbon atoms of the hydrocarbon group of R ³ is 6 to 10.-(AO)-,-(EO)-, n, and m are the same as in chemical formula (1). The critical micelle concentration (cmc) of the component (A) is in the range of 0.01 wt% or more and less than 1.0 wt%, and the critical micelle concentration (cmc) of the component (B) is 0.01 wt% or more 1 The critical micelle concentration (cmc) of the component (C) is in the range of 0.0001% by weight or more and less than 0.1% by weight in the range of less than 0.0% by weight. A liquid detergent composition as described in 1. above.